Silent strong compression, nearly-complete air-insulation, and high thrust repeatedly obtained by pulsed rocket engine based on colliding supermulti-jets

Remi Konagaya, Sota Kawaguchi, Junya Mikoda, Kodai Kinoshita, Hiroki Makimoto, Yoshiki Kobayashi, Tomotaka Kobayashi, Yusuke Tada, Shi Lujiang, Ken Naitoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We have previously proposed a new type of rocket engine with a compressive combustion principle based on the collision of supermulti-jets with pulse, while some combustion experiments qualitatively indicated a possibility of nearly-complete air-insulation and noiseless high compression. In this report, the pressure near the collision point due to the supermulti-jets colliding around the chamber center is quantified by experiment and three-dimensional unsteady computation. Then, combustion experiment done at a very lean burning condition with upstream fuel tank condition of about 3 bar and for only a very small combustion-chamber diameter of 18 mm reliably and repeatedly measured thrust over 100 N. This level of thrust was also obtained by calculation from measured chamber wall pressure using quantified pressure increase near the collision point. Thrust level of small conventional rocket engines is under 50 N under the same conditions. This shows the high potential of our new rocket engine. A conversion analysis also showed that the present new engine due to the supermulti-jets colliding with pulse has a possibility of specific impulse comparable to that of a large conventional rocket engine. Combustion computations are also being done, which may show combustion efficiency of about 90%.

Original languageEnglish
Title of host publicationAIAA Propulsion and Energy Forum and Exposition, 2019
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105906
DOIs
Publication statusPublished - 2019
EventAIAA Propulsion and Energy Forum and Exposition, 2019 - Indianapolis, United States
Duration: 2019 Aug 192019 Aug 22

Publication series

NameAIAA Propulsion and Energy Forum and Exposition, 2019

Conference

ConferenceAIAA Propulsion and Energy Forum and Exposition, 2019
CountryUnited States
CityIndianapolis
Period19/8/1919/8/22

ASJC Scopus subject areas

  • Energy(all)
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Mechanical Engineering

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  • Cite this

    Konagaya, R., Kawaguchi, S., Mikoda, J., Kinoshita, K., Makimoto, H., Kobayashi, Y., Kobayashi, T., Tada, Y., Lujiang, S., & Naitoh, K. (2019). Silent strong compression, nearly-complete air-insulation, and high thrust repeatedly obtained by pulsed rocket engine based on colliding supermulti-jets. In AIAA Propulsion and Energy Forum and Exposition, 2019 (AIAA Propulsion and Energy Forum and Exposition, 2019). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-4312